gibbons



March 13, 1945. I J; GIBBQNS 2,371,164

MEANS FOR TREATING MULTIWOVEN FABRICS Filed April 14, 1942 3 Sheets-Sheet 1 INVE TOR ORNFV March 13 19 45. I o s 2,371,164

MEANS FOR TREATING MULTIWOVEN FABRICS Filed April 14, 1942 5 Sheets-Sheet 2 -mumv-5 l 87 n 46 4 as as l him: v 74 4a E'E 1. El L imul INVENTOR 54.4" Era E: v BY 41 ORNEY Patented Mar. 13, 1945 MEANS.rFQBTREATINGMUMQIWOMEN -EA R QS This invention -relates-to means fortrea.ting multi-woven fabrics, and more particularly-to :a mechanism for autttng the icrossvover' threads eonnectinglthe topand bottom continuous webs of a fabriostrueture Ofiibhis eharaeterin the pros? ess o1'-1ts formation on ya loom and 'in synchrony ism-with the weaving :operation,

:In the formation of multiewouen fabric struetures, such as ladder tapes and the "like, the fabric assembly is "formed with oppositely :positioned 3130p and *bottom ibody bandsor continuous webs :hav-ing intermediate tapes located 'therebetween, the Warp threads of which are interwomen with the top :andr'hettem body webs alternately and in a -transversely ofiset relation vwith -eaoh other throughout the longitudinal extent of the tormedfabrie. V i

' mne topand shottomtbody webs arevnositioned in theiloom ;on.e direotlyoabovethe othe andane each termed 10f warp .-and :weftithreads woven independently :of the ;other:hody web=,at:;all t mes.- The intermediate tapes may eachxbe formed-horn its own- 5572 151?!) :and weft-thteads, sr-r ey eomnrlse q xatewarp threadsonlyoand alt Qua-l1 the-fin termediatetapes maybe-p sitioned. liquely relativeftprflafih other ins the-,operation-ofweavs theylie' asll ntiallyt esameihorizontal pla ibetweenzt e-r qpand b ttom-body webszand in-oslig tlyiseparated tziansvets relation aftertajn 'iwoyen. t

In the formation .of this material the interweaving of the intermediate tapes with the ;op'

nositely positionedsoontinuous webs :or' body :bands results inxthe locationlof unwoven warp-threads at the transition points:ofitheintermediate-t pes irorn one to th -other -o:f:=the. .opp.osed -;cont nous bands tor webs between :t-he areas of oimett on of :the intermediat tapes with J-the opposed top and bottom body webs of :the xfa rio; These w'arpithreads ate-hound into or inte la ed-with tinuous hotly :hands relosely together until th se cross .loaver threads :are wto permit flisplacement of "the acontinuousghody hands ou war ly from each other; Jeanine 'ZGLZQSS straps, :tormed from the intermediate :atazpe portions, whichoonnect the opposed :oontinuous webs adjacent to their opposite "latera-laedgesuto'form a ladder-like strueture. t i i EAt' znredet rmtnesl adistanee tusually apmoxia mating the width of La slat :forwhichthe tapeis designed, :the warp threads of \the intermediate tapes are interlaced with, stitched :toor bound into firs-tone, and-:then-theother outer web, the bound areasof eachi-tape to one iorthetother of thecontinuouswwebs being substantially equally spaced from each 1 other, :andlocatedin alternate relation with -and transversely offset from cork-e 788pondingvboundaiteas ofrthe.otherjntermediate tape-with thecorrespondingwweb. :Eachgroup of warp threads in one i of the intermediate s apes may bedescribed as eontinuallyieoinathrough.the cycle of being bound into one of tthecontinuous webs, then 1 crossing 1. 355,! ate 1 the other -.con.tinuous web,-to::f.orm aeros 5 rape. or 13$ WQYQQ 1.11 :not r 1 d? thaothe 'webo-a dfin. 1 M cross over to the first continuous'web, '{Iheslf ort cross over point of each intermed at tape usua lyzlooat d substan allyzeentra y ofadia en sh rt ss-over EQ t 'zSwQf the otherz an Ventilated ihat mindin or he met tape, .is-

OYe tH Q idS intempnnectinaoppos e web must 7 be eat befonetheta e tan eom etedandmade eady :for u e- ;Ineenerah t e euttingzo t se threadsisraeeomnlished hyhand. Operat v s inent scisso s between t e o positely p s t oned outer s d sever t e c o sove thread tweenveae of the poi ts where they-are st t h toior interwoven w th the oppos tely osit on .tensideta le ea s and ne essit t ng a vg ea the cutting mechanism in synchronism with the operation of the loom.

A further object of the invention is the provision in a device of this character of means for displacing the cutting means transversely of the formed fabric at each alternate transition of the cross over threads, and means for operating the cutting mechanism at a desired point in the displacement of the cutting means for severing the cross over threads.

Another object of the invention is the provision in a jack operated loom structure of the character described, of cutting means movable to sever cross over threads formed in a fabric macutting means.

Another object of the invention is the provision of cutting mechanism and a support therefor mounted for reciprocating movement transversely of the paths of travel of fabric structures from the loom, together with means for reciprocating the cutter support in synchronism with the movement of the alternately positioned cross over threads, as the formed fabric moves outwardly from the point of its formation on the loom.

A further object of the invention is'the provision of means mounted in operative relation with a loom for severing the cross over threads of plural narrow fabric structures immediately following their formation on the loom, together with means for actuating the cross over thread severing mechanism in timed relation with the rate of fabric formation.

Other objects and advantages of the invention terial, and jack operated means for actuating said' relate to various improved details of construe tion and novel arrangement of the parts, as will be more fully set forth in the detailed description to follow.

Referring to the drawings:

Fig. 1 is a perspective view of a portion of a multiwoven fabric structure or ladder tape of the character described, showing the location of intermediate tapes, or groups of warp threads serving as intermediate tapes, together with their points of interwoven connection with the continuous outer webs as well as the positions of the cross over threads at the transition points,

Fig. 2 is an edge view of a fabric structure of the character shown in Fig. l, with the continuous outer webs partially separated from"'each other adjacent to one end of the fabric material by cutting certain of the cross .over threads} Fig. 3 is a view similar to Fig. 2, showing the fabric structure after the severance of the-cross over threads at all transition points to permitdisplacement of the continuous outer webs from each other substantially to the limit of the distance permitted by the cross straps,

Fig. 4 is a perspective View of a portion of a loom structure, parts thereof being broken away, showing the breast beam in its relation with takeup and delivery rolls together with an improved cutting mechanism arranged in position for perative engagement with the fabric structures asthey come from the loom and one form of jack operated means for actuating the cutting mechanism,

Fig. 5 is a front elevational view of a'form of cutting mechanism and cutter supporting means therefor adapted for use in cutting," the cross over threads of tapes of the character described together with a diagrammatic representa tion of operating means therefor which mayinelude levers adapted for actuation by jacks or other suitable loom operating elements,

Figs. 6, '7 and 8 are top plan views of one form of cutting mechanism, showing the cutting mechanism in different operating positions with reference to the tape structure,

Fig. 9 is an enlarged sectional view of the cutting mechanism shown in Figs. 6, '7 and 8, taken substantially along the line 9 9 of Fig. 8

Fig. 10 is an enlarged sectional view showin means operatively connecting the cutter operating disk and actuating slide, taken substantially along the line l0--l 0 of Fig.6,

Fig. 11 is a perspective view of a portion of a loom structure, parts thereof being" broken away, showing the breast beam in its relation with the take-up and delivery rolls, together with cutting mechanism arranged in position for operative engagement with narrow fabric structures, coming from the loom together with a modified form of jack operated mechanism for actuating the cutting mechanism,

Fig. 12 is a top plan view showing a pair of delivery rolls witha cutter supporting slide operatively positioned relative thereto and provided with a modified form of cutting mechanism for cutting cross over threads, together with a diagrammatic representation of means for actuating the slide from any suitable or desired form of jack operated means which may be a part of the loom mechanism,

Fig. 13 is an enlarged top plan view of one form of cutter which may be employed in connection with the mechanism as shown in Fig. 12, and,

Fig. 14 is an enlarged detail sectional view,- taken substantially along the line l4-l4 of Fig. 13.

In the embodiment of the invention illustrated herein, Figs. 1' to 3, inclusive, show somewhat in detail a conventional form of ladder tape of a type which in its formation has cross over warp threads connecting the oppositely positioned continuous webs.

In this form of construction, 1 designates the woven assembly generally, which comprises oppositely positioned outer webs 2 and 3, interconnected by series of intermediate tapes or intermediate groups of warp threads designated by reference characters 5 and 6, and which are spaced inwardly from the lateral edges of the webs to provide marginal areas 1 and- 8 located,

indicated by the reference characters I0 and H,

respectively, and between these interwoven areas the warp threads of the tapes cross over from one of the continuous outer webs to the other to form an interwoven area with the other 0011- tinuous outer web before the main cross strap portion of the tape is formed independently of either of the continuous outer webs. At each transition point of an intermediate tape a plurality of warp threads l2,'located between the interwoven areas I 0 and I ljconnect' the webs 2 and 3. These warps threadsli, hereinafter termed cross over threads, connecting the'opposed webs 2 and 3, must be severed before the webs 2 and 3 can be separated from each other torender the completed ladder tape ready for use, 1

In a similar manner, the connection of the intermediate tapes 6 with the continuous outer webs 2 and 3 are indicated by reference characters H and I5,'respectively, and the cross over threads amines connecting the webs ,22 and i=3 between adjacent interwoven areas are -fdesignated by :the rreference character Ii. i

:It will "he noted that in the .formationmf the structure shown, the intermediate tape series 5 andlfihavetheirilwints of interwoven-connection with the continuous webs .12 :and t3 spaced from each other slongitudinally rof the webs imsuch ;a

, offset relation -.with ,each other longitudinally of theiformed'efabric. o

A- fabricqstructurecccmprising continuous webs connected-by -..cross straps or intermediate :tapes and having rcross .over threads formed therein whichlconnect the continuous webs at intemzals may be wovenonlyvhat are'acommonly termedrnarrow fabric looms, which in addition to well-known weave forming mechanisms v:cormnrise :the usual take-11p and delivery rolls located adjacent 'to'the forward end of *the loom to engage the formed material and exert a continuous drawing action thereon for .moving the fabric structures 'ffiorwardly .from :the .point .of weaving to ithe point of their-dischargeiromthe loom.

0n .Eig. 4 :of the drawings is: shown eon-e :form

t of thread cutting mechanism 'zESSOGiKti-Ld with a loom. structureof .a conventional :type, isuc'hcas :is adapted. for use in weaving narrowfabrics of gthe character described, .an'din which certain .aloom operations as well astthe :operation of thematting mechanism is: efiectedzliyuneansrotj asks-cacti-ng through =-cab1es and rcertain connecting and directing mechanisms whiohihave been 'eoniitted from the -showing in. the interest of 1 clearness.

In Fig. 4 there :shown: acbreastbeam :l s suitably; positioned with: relationito the .drawin-girolls,

:Rotatably amounted in'suitablie position :relative to the breast beam I8 is a take-up mm 1218 and delivery rolis 52 1 'sand 2&9 adapted to engage the [termed fabric and draw it from xitheiloom whilemaintainingihexsameunderza substantially uniform and constant tension during :its travel from the'loommntildischargediirom "the delivery rollr'zfl. The rolls :Zl, zit-Land 23 .are rotatably supported flay suitable "frame :memhers (not is'howrr), and are rotatenil by aanyzsuitable gm eans operated in timed relation'with the 'weave forming mechanism of :the doom, as'sis common in :devices of this character. Theirol'ls 121:and nemaywherof substantially equal size, while the .ifinal "delivery roll '25 'rispreterably of somewhat greater idiamter than the T011 t2] "to insure the ana'intaining of "the :desired rtension on ltheziabric structures l between the roll-s21 and z9rsufitcientttorlroldrthe material taut, ".therrolls .2 I :and 329 are :prefaerably provided with roughened or ttractiue surfaces upon :those portions "which ;are engaged by the fabricv structures "to rpre entalinpage mf the meric relative :to 13119 roll :surfaces, as :indicated at Miami Sir-respectively. r

The marrow i'ffi'iliiVrStIHCtIITESTOI efabricastrips l pass downwardlystrom the :breast beam 118 :after their .tormation hbeneath the roll =28. then upward-lyrcverethe rrollill sand downwardly Jan'mforwariily :over dhe zroll :29 dicr dinal zdischargeirom the doom. Mounted union :the :front' face :cf the breastrbeam llilsare brackets '34 .Lonlyone ofwwhich is shown) zpivotally :supp'orting :downwardly extending arms 35, of any suitable characternwhich are each providediat its dowerend with-.abear'ing 3.6'forsupportingerotatably-a pressurelroll orlknee 1101153 in position'torengage and press against each fabric :structure .as it passes over the main drawing mall :29. The :applicationof pressure 1 to the :narrow frabric :strips on; passing over the .roll

2-9 results in :a definite .and substantially uniformirictional engagement doetween the roughened surfaces 3] :of the roll 29 and *thefabric material thereby.insuring-substantial tension Dnxtheiabric inlitsqfnassage 'fromctherolldl to the 10011129.

IiheLmechanismadescrihed above, as shown in Flig. emf the rdrawings isof :ascharaciter and type suchas isrconnnonly:,employed-.in machines of this character and is .here :shown and described "for illustrating the :relationship :existing between the conventional loom structure and the improved cutting mechanism :which is hereinafter "more particularlyset forth.

inlurality rof downwardly extending brackets Allzmay .bevsecured to the .hrea-stbeam l8 :and extend tdownwardly therefrom :to provide support for the cutter carryingmechanism. fEa'ch bracket 4l01i-s ,provided with :parallel openings .orguide rests M and 42 .adapted to .receive and 'support cutter :operating and esupporting bars 43 and M4 respectively, which-extend substantially tl'xroughout the :efiectivelength :of "the loom. Each @gulde restcor zoperiing lll is oi-somew'hat greater width than :the cutteraoperating bar c i3acarriedithereby l intorderto permit movement ofethe'barfl toward in rthe .form of "the invention .zshown in lIFig.-'4 I of ithe drawings these ccutter tunits each "cornprise a fixed cutter 46 andia movabiacutteril, together with ran operating 1 disk 118 adapted for actuation by "the cutter operating .bar J3, after armannerheneafterzmore fully described, to operate tthe ranovable :cutter til 'at suitable intervals. Qne mi athe scatter: units above described "is located in operative relationwith eachinarrow fabrice structure rpassing between the rolls 2'! and 25, and :the :several units are displacea'ble simultaneouslyibyzlongitudinal movement of I the cutter carryingsbar 44 :to zbringithe units into operative engagement with the znarrow fabric structures suhstantiallyrsimuitaneously for severing certain of the correspondingly positioned :sets of cross ouerlthreads ;.of-eac'h structure through a-single operation of theicutterloperatingban-43. j

Qperatin'g cables 50 and iii -are connected with the ends of thezcutter operating bar 43 and cutter carnying har M 'whichsare located at -the right. asiseen inEig.=-ei,=and these cables may be passed over fixed-:pulleys 52 and 53"respectively'andacbars @413 and 44 at; the deft hand Y end of the machine, as seentinFigAmay be passed over fixed pulleys-'51 andifmand:operatively connected with jack cables 59 to provide for displacing the bars 43 and 44 toward the left as seen in Fig. 4, through operation of certain of the jacks 22 in timed relation with the operation of the loom mechanism.

The particular form and construction of the cutting units as shown in Fig. 4 may correspond with that of the cutting units shown in Figs. 5 to 11 in all respects and may be operated in a similar manner for severing the cross over threads, except that the means for effecting longitudinal movement of the cutter operating and cutter carrying bars 43 and 44, differ from each other in certain forms of the invention shown.

As shown in Fig. 5 of the drawings, the cutter carrying bar 44 is positively operated to displace it toward the right (as shown in that figure) to a greater or less degree, dependent upon the position of the cross over threads to be severed, and is permitted to move toward the left (as shown in that figure) under theinfluence of the coiled spring 60. Movement of the cutter carrying bar 44 toward the right, as above described, may be effected by the simultaneous or selective movement of one or both of a pair of levers BI and 62, whichare connected with the cutter carrying bar 44 by a cable 63 passed over a pulley 64 carried by the bar 44. The levers BI and 62 may be operated by any convenient arrangement of jacks or suitable forms of jack operated mechanisms, or by other means acting in timed relation with the rate of fabric formation.

-In a similar manner, the cutter operating bar 43.is adapted to be moved toward the right, as seen in Fig. 5, by movement of a lever 66 to which it is connected by a cable 61 passed over fixed pulleys 68 and 69, while it is moved toward the left, as seen in that figure, by means of a coiled spring I0, which, like the coiled spring 60, is adapted to be connected to a fixed portion of the machine frame or other stationary element. The lever 66, like the levers 6| and 62, may be operated by one of the loom jacks or any suitable form of jack operated mechanism adapted for the purpose, or by other means through which it may be operated in timed relation with the rate of fabric formation.

The cutter supporting and cutter operating means asshown in Fig. 5, like those previously described, are adapted and intended to provide supporting means for and to operate a plurality of cutter units, one of which units is operatively associated with each narrow fabric structure being formed on the loom, and this mechanism differs from the corresponding means shown in Fig. 4 of the drawings, mainly in that the cutter operating bar 43 and cutter supporting bar 44, as shown in Fig. 5, are positively actuated for displacing them in one direction only, being returned to their initial positions by the action of the constantly effective coiled springs 60 and '10.

The particular construction of the elements making up the cutting units as shown in Fig. 4 as well as those illustrated in Figs. 5 to 11, inclusive, will nowbe described, it being understood that the construction and arrangement of the parts shown and the specific arrangement and application of the operating elements are to be considered as made for the purpose of description only and is not to be taken in a limiting sense.

The fixed cutter 46 may be secured to the cutter carrying bar 44 in any suitable or desired manner, as by bolts or rivets 12, and is provided with a cutting blade 13 cooperatively positioned withrespect to a cutting blade 14 formed on the movable cutter 41. As shown, the fixed cutter 46 may be additionally secured to the cutter carrying bar 44 at the point of its pivotal connection with the movable cutter 41 as by means of a bolt 15, provided with a shoulderedportion 16, which bolt may be passed through the cutter 46 and cutter carrying bar 44 so that the shoulder 16 will engage and clamp the cutter 46 firmly to the bar 44, while a spacing sleeve 11 is mounted on the bolt 15 to provide a bearing for the rotatable disk 48. A nut 18 carried by the reduced portion 19 of the bolt 15 engages the spacing sleeve I1 and serves to draw the cutter 46 into firm clamping relation with the bar 44. The cutter 41 may be pivotally mounted upon a reduced portion of the bolt 15 extending upwardly from the shoulder 16, and the threaded end portion 8! of the reduced portion 80 is provided with a shoulder 82 engageable by a nut 83 to secure the movable cutter 41 in position relative to the fixed cutter 46 while permitting movement of the cutter 41 relative to the cutter The cutter operating disc 48 is capable of being rotated freely relative to the cutter supporting bar 44 upon the spacingsleeve l1 carried by the'bolt 15 and may be connected to the cutter operating bar 43 by a bolt 85 mounted to rotate freely in the operating bar 43, as shown in Fig. 10 of the drawings. The bolt 85 has a reduced end portion 86 passed through a sleeve 81 carried by the disc 48 and is provided with a nut 88 by which it may be clamped firmly to the cutter operating disc, as 'is' shown more particularly in Fig. 10 of the drawings.

The disc 48 may be provided with an arcuate slot 90 providing means for adjustably connecting the movable cutter 41 thereto by any suitable means, such as is shown in Fig. 10 of the drawings. This connecting means may comprise a bolt 9| having a disc engaging head 92, a disc engaging clamping and spacing sleeve 93 having a portion passed through the movable cutter 41, and a nut 94 for holding the parts in clamping engagement with the disc '48 while permitting movement of the cutter 41 relative to its bearing on the spacing sleeve carrying member 93. 1

As shown in Fig. 9 of the drawings, the cutting blade portion 13 of the stationary cutter 46 is recessed upon the face thereof nearest the cutter carrying bar 44, s indicated at 95, to provide a space sufficient to receive the lower web of the fabric material as the cutter members are advanced into position to sever the cross over threads 5 and 6, and the ends of the cutter blades 13 and 14 may be inclined somewhat, as indicated at 96, to permit their entry between opposed webs 2 and. 3 without catching in the fabric material.

In the operation of the cutting mechanism shown in Figs. 4 to 11, inclusive, the narrow fabric structures I each pass downwardly from the breast beam l8 beneath the take-up roll 28 and then upwardly over the delivery roll 21 and from there downwardly over the delivery roll 29 and under the knee roll 31 for delivery from the loom. In their passage from the roll 21 to the roll 29, the fabric structures pass, while under substantially uniform tension, over the cutter supporting bar. 44. Since the formation of corresponding parts of each narrow fabric strip 0ccurs simultaneously in the loom operation, corresponding cross over threads l2 and I5 present position to cut the cross over threads I6 at the position until afterfurther displacement of the cutter carrying bar 44 by actuation of the sec-- ond lever arm. After the cutting of cross over threads I2 and I6, the cutter carrying bar may be returned to its initial position by the operation of the lever arms I and I02, associated with lever arms 99 and II, either simultaneously or in sequence, corresponding with or dependent upon the previous manner of operation of the lever arms 99 and IOI in displacing the cutter carrying bar 44 toward the left.

As an alternate mode of operation, the cutter carrying bar 44 may bedisplaced to the left, as shown in Fig. 11, by simultaneousmovement of the lever arms 99 and ID! to bring the cutters into position to sever the cross over threads I6 and I2, and. then returned to its initial position by simultaneous operation of the lever arms I00 and I02. e

In this form of the invention the .cutter operating bar 43 is returned to its initial position by the coiled spring I26 afteractuation by movement of the lever arm 91, and this isthe case whether the cutter carrying arm 44 is located in position for cutting cross over threads I2,or I6, located adjacent to opposite side edges of the tape, at the timeof the actuation ofthe cutter operating bar 43. In this particular form of the invention the cutter operating bar 43 is operatively connected with the lever arm 91 which may be displaced and returned to its initial position immediately after displacement with each movement ofthe cutter carrying bar 44 toward the left to bring the cutting mechanism into position for severing cross over threads I2,or I6 of the tape. Since the lever arm 91 moves against the tension of the spring I I0 and the cutter operating bar 431s displaced against the tension of the spring I26 the cutter operating bar, 43 tends to assume its initial position with relation to the cutter carrying bar 44 upon each return movement of the actuating lever 91 following the displacement of the cutter operating bar 43 toward the right as shown in Fig. 11 of the drawings.

In the form of the invention shown in Figs. 12, 13 and 14 of the drawings a cutter carrying bar 44 is mounted for endwise. sliding movement between delivery rolls 21 and 29 of the character above described and is provided with spaced oppositely positioned cutters I30 and I3I to be located upon opposite sides of each narrow fabric structure I passing over the delivery rolls 2! and 29 and across the face of the cutter carrying bar 44. The cutter carrying bar is adapted for alternate reciprocation by any suitable means, which may be of a character similar to or corresponding in operation with certain of those previously described or otherwise, and which for the purpose of illustration, are shown as cables I33 and I 34 secured to opposite ends of the cutter carrying bar 44 and passed over guide rolls I35 and I36, respectively, for attachment toany suitable actuating means, such as the jack levers I9 located uponthefopposites'ide of the narrow fabricstructure as'the bar 44 is moved toward the rightas shownin Fig. 12 ofthe drawings.

In this form of the invention the cutter carrying bar 44 may be moved to the right and the left intothread cutting position by any suitable or desired mechanism, other than the means previously shown and described, since the cross over threads. IZand I6 are substantially uniformly spaced from each otherthroughout the extent of the narrow fabrics structure and are located adjacent to opposite edges thereof, thereby permitting severance of the threads by a continuous uniformly obtained displacement of the cutter carrying bar 44' in opposite directions of substantially uniformdegree eflectedin timed relation with the movement of the fabric structures from the loom.

The cutter members I30 and I3I may be of any suitable ordesired form or construction, and for the purpose of illustration are shown herein as each including a casing I31 which may comprise a base I38 and a cover plate I39 provided with a rounded end having an extension I40 adapted to engage with a recess formed in the end of the base I38. -A cutting element, such as a razor blade I M or the like, may be clamped between adjacent surfaces of the base and cover I38 and I39, and a bolt I4 2 is provided for drawing the base I38 and cover I39 firmly together in clamping engagement with the cutter MI and at the same time securing the cutter member firmly in position on the cutter carrying bar 44', with the .cutting edge of the cutter member projecting from the casing I31 suitably for engaging and severing the cross over threads with which it may 'bebrought'into contact by reciprocation of the cutter carrying bar 44 in conjunction with the continuous forward movement of the narrow fabric structure over the delivery rolls 2'! and In each form of the invention shown and described, the cutter carrying and cutter operating bars are shown as operated from levers or cable connections which are operatively connected with certain ofthe jack'members forming apart of the operating mechanism of the loom, in order that the necessary movements of the cutter carrying bar 44 either with or without the cutter operating bar 43, may be made in timed relation with the operation of the loom mechanism or stitch forming means of the loom.

' While this form of operating means for the cutting mechanism has'been' indicated as well adapted to be employed in a. device of this character for correlating the operation of the thread cutting'mechanism with the loom operation, it is to b understood that any other suitable form of cutter operating mechanism may be used which is capable of being synchronized with the loom operating mechanism or arranged to operate in timedrelation with the stitch forming means or the rate of travel of the delivery rolls so as to actuate the thread cutting mechanism at intervals corresponding with those intervening between the location of successive cross over threads on the several narrow fabric strips as they come into position to be engaged simultaneously by the thread cutting mechanism.

I What I claim is:

1. The combination in a loom structure having harness actuating mechanism for effecting the weaving of ladder tape, of cutting apparatus for severing the cross over threads offsaid tape, and means connecting said mechanism and said apparatus whereby the cutting apparatus is actuated by said harness actuating mechanism.

2. The combination in a loom structure having harness actuating mechanism for effecting the weaving of ladder tape, of cutting apparatus for severing the cross over threads of said tape comprising a cutter supporting member movable into and out of thread cutting position,cutters carried by said member, and means actuated by said harness actuating mechanism for moving the aid member to bring the cutters into thread cutting position, and means alsoactuated by said harness actuating mechanism for effecting relative movement between said cutters to sever said threads.

3. The combination in a loom structure having harnes actuating mechanism for efiecting the weaving of ladder tape, and means for moving the woven ladder tape, of cutting apparatus for severing the cross over threadsof said tape, and means actuated by said harness actuating mechanism for efiecting movement of said cutting apparatus in a direction transverse to the movement of said tape into cutting position and there'- upon eifecting the severing of said threads.

4. The combination in a loom structure having harness actuating mechanism for effecting the weaving of ladder tape, and means for moving the woven ladder tape, of cutting apparatus for severing the cioss over threads of said tape, and means actuated by said harness actuating mechanism for eifecting movement of said cutting apparatus in a direction transverse to and in timed relation with the movement of said tape to bring the cutting apparatus into cutting position with respect to the said threads and thereupon severing the said threads.

5. The combination in a loom structure having harness actuating mechanism for eifecting the weaving of ladder tape and having rolls for moving said tape, of a cutter supporting member mounted for movement in direction parallel to the axis of said rolls, cutters carried by said member for cutting the cross over threads of said tape, and means connecting said member and said cutters with said harness actuating mechanism for effecting movement of said member to bring the cutters into cutting position with respect to said threads and thereupon actuating,

said cutters to effect severing of said threads.

6. The combination in a loom structure having harness actuating mechanism for effecting the weaving of ladder tape and rolls for moving said tape, of a cutter supporting member mounted for movement in a direction longitudinally of said rolls, a fixed cutting element and a movable cutting element carried by said member for severing the cross threads of said tape, means connecting said member with said harness actuating mechanism for moving said member to bring the cutting elements into thread cutting position in timed relation with the movement of the tape by the rolls, and means actuated by said harness actuating mechanism for efiecting movement of the movable cutting element to sever the thread when the cutting elements are in the thread cutting position.

EDWIN J. GIBBONS. 

